The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 30, 2015
Filed:
Mar. 13, 2012
Makoto Nakamura, Zushi, JP;
Makoto Nakamura, Zushi, JP;
HITACHI AUTOMOTIVE SYSTEMS, LTD., Hitachinaka-shi, JP;
Abstract
A multi-cylinder internal combustion engine is provided with a variable valve actuating system. At a startup of the engine, a controller performs: causing an initial exhaust valve opening timing of a first combustion cylinder to approach bottom dead center; and setting a second valve overlap period greater than a first valve overlap period, wherein the first valve overlap period is a period from an initial intake valve opening timing of the first combustion cylinder to an initial exhaust valve closing timing of the first combustion cylinder, and wherein the second valve overlap period is a period from an initial intake valve opening timing of a second combustion cylinder to an initial exhaust valve closing timing of the second combustion cylinder immediately after an initial combustion event of the second combustion cylinder after an initial combustion event of the first combustion cylinder.